Turkish Defense Minister Hulusi Akar said Wednesday that a breakthrough had been reached in the agreements and a coordination center would be established in Turkey that will oversee the comings and goings of merchant vessels. Officials from Russia, Ukraine, Turkey and the U.N. will be involved in the coordinating efforts, the minister said. According to the preliminary plan, Russia would agree to a cease-fire to allow three Ukrainian ports to be opened in the Black Sea to allow for safe passage, first reported by the Wall Street Journal. The merchant ships would be escorted by Ukrainian naval vessels which would...